Part A . Put this code to catalog/view/theme/default/template/checkout/confirm.tpl

jomniaga-opencart-confirm.tpl.php

<?php
/**
* Jomniaga Conversion code
*
* Put this file to catalog/view/theme/default/template/checkout/confirm.tpl
* before
*      </div>
*      <div class="payment"><?php echo $payment; ?></div>
* 
*/
$name = '';
foreach($products as $product){
    if($name==''){
        $name = $product['name'];
    }else{
        $name = $name. ', '. $product['name'];
    }
}

$this->session->data['jomniaga'] = array(
'cvn'=>$name,
'cva'=> $total['value']
);
/**
* EO: Jomniaga Conversion code
*/
?>